Determine user input data-type dynamically in JAVA

Question

I\'ve written the following code to determine the data-type of input entered by the user.

Update: Removed parsing into Float since a

Answer 1

My approach would be to let the framework do its thing, and use it to parse the input a generic way:

Object obj = new org.json.JSONTokener(input).nextValue();
if (obj instanceof JSONArray)
    return "JSONArray";

if (obj instanceof JSONObject)
    return "JSONObject";

if (obj instanceof Integer)
    return "Integer"
...

Perhaps use a switch statement or a Map instead of a long list of if constructs. And catch JSONException for input that is not valid JSON.

Could perhaps be simplified to return obj.getClass() or obj.getClass().getSimpleName() for almost identical functionality to what you have now.